Claims:We Claim:
1. An internal combustion engine (108) comprising
a crankcase (201); and
a gear position detector (207),
wherein said crankcase (201) includes a shift drum (209), said shift drum (209) being operatively connected to said gear position detector (207),
wherein a portion of said gear position detector (207) being in contact with a bracket (208) to get accurate gear indication.

2. The internal combustion engine (108) as claimed in claim 1, wherein said bracket (208) comprising a base portion (208A) extending from a front end (208F) to a rear end (208R),
wherein said base portion (208A) includes
a first portion (208AA),
a second portion (208AB), and
wherein an outer surface (208ABO) of said second portion (208AB) being configured at an offset from an outer surface (208AAO) of said first portion (208AA).

3. The internal combustion engine (108) as claimed in claim 1, wherein said gear indication detector (207) being operatively connected to a gear indication device through a control unit.

4. The internal combustion engine (108) as claimed in claim 1 or claim 2, wherein said bracket 208 includes a third portion 208AC,
wherein an outer surface (208ACO) of said third portion (208AC) being configured to be offset from an outer surface (208AAO) of said first portion (208AA).

5. The internal combustion engine (108) as claimed in claim 2, wherein base portion (208A) ramps upwardly through said second portion (208AB) and said third portion (208AC) to keep an inner surface (208ACI) of said third portion (208AC) in contact with the upper outer surface (207UO) of the gear position detector (207).

6. The internal combustion engine (108) as claimed in claim 2, wherein an inner surface (208ABI) of said second portion (208AB) abuts with said outer lower surface (207LO) of said gear position detector (207).

7. The internal combustion engine (108) as claimed in claim 1, wherein said rear end (208R) and front end (208F) of said bracket (208) being configured to have lobes.

8. The internal combustion engine (108) as claimed in claim 4 wherein said thickness of said third portion (208AC) is less than the remaining portion of said base portion (208A).

9. The internal combustion engine (108) as claimed in claim 2, wherein said first portion (208AA) includes one or more openings (208AFO) being configured to receive attachment means (210) to detachably attach said bracket (208) to said crankcase (201).

10. A bracket (208) abutting a gear position detector (207) in a vehicle (100) comprising
a base portion (208A) extending from a front end (208F) to a rear end (208R),
wherein said base portion (208A) includes
a first portion (208AA),
a second portion (208AB), and
a third portion (208AC),
wherein an outer surface (208ABO) of said second portion (208AB) being configured to be offset from an outer surface (208AAO) of said first portion (208AA).

11. A saddle type vehicle (100) comprises an internal combustion engine (108) as claimed in any of the preceding claims.
, Description:TECHNICAL FIELD
[0001] The present subject matter relates to a saddle type vehicle. More particularly, to an internal combustion engine for a saddle type vehicle.

BACKGROUND
[0002] Typically, a gear shift linkage assembly is used for manually shifting gears by using the foot to shift the position of a gear shift lever so that the desired drive gears or the neutral position in a gearbox is engaged. Particularly, the desired drive gears or the neutral position in the gearbox is engaged by either lifting or pushing down the gear shift lever. Thus, the gear shift lever serves as the contact point for manual shifting with a foot. A change in drive gear positions is achieved due to the transfer of motion from the gear shift lever to a gear shift shaft through a connecting member and a gear shift link member.
[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
BRIEF DESCRIPTION OF THE DRAWINGS
[0004] The present invention is described with reference to an exemplary embodiment of a saddle type two-wheeled vehicle colloquially called a motorcycle wherein a rider has to straddle and sit. This invention is implementable in two-wheeled vehicles/three-wheeled vehicles. The same numbers are used throughout the drawings to reference features and components. Further, the inventive features of the invention are outlined in the appended claims.
[0005] Non-limiting and non-exhaustive embodiments of the invention are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. It should be appreciated that the following figures may not be drawn to scale.
[0006] Descriptions of certain details and implementations follow, including a description of the figures, which may depict some or all of the embodiments described below, as well as a discussion of other potential embodiments or implementations of the inventive concepts presented herein. An overview of embodiments of the invention is provided below, followed by a more detailed description with reference to the drawings.
[0007] Figure 1 illustrates a description is made of an entire schematic structure of a saddle type vehicle two-wheeled vehicle (hereinafter “vehicle”) (100), as per embodiment, in accordance with one example of the present subject matter.
[0008] Figure 2a illustrates a left side view and a localized enlarged view of the engine assembly (108), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures.
[0009] Figure 2b illustrates a perspective view of the engine assembly (108), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures.
[00010] Figure 3 illustrates a partial cut section view of the engine assembly (108) and a localized enlarged view of a Belleville washer (301), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures.
[00011] Figure 4 illustrates a perspective view, a side view and a top of the bracket (208), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures.
[00012] Figure 5 illustrates a localized enlarged cut section view and a partial cut section view of the engine assembly (108) across the B-B axis as shown in figure 2(a), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures.

DETAILED DESCRIPTION

[00013] In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. One skilled in the relevant art will recognize, however, that the techniques described herein can be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring certain aspects.
[00014] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. Further "front" and "rear", and "left" and "right" referred to in the ensuing description of the illustrated embodiment refer to front and rear, and left and right directions as seen from a rear portion of the vehicle and looking forward. Furthermore, a longitudinal axis Y – Y’ unless otherwise mentioned, refers to a front to rear axis relative to the vehicle, while a lateral axis C – C’ unless otherwise mentioned, refers generally to a side to side, or left to right axis relative to the vehicle.
[00015] However, it is contemplated that the disclosure in the present invention may be applied to any vehicle without defeating the spirit of the present subject matter. The detailed explanation of the constitution of parts other than the present invention which constitutes an essential part has been omitted at suitable places.
[00016] Typically, the saddle type vehicles (hereinafter “vehicles”) are easier to maneuver in traffic and congested areas. The vehicles provide good control with better operability in heavy, stop and go driving. Such vehicles are also lighter in weight as compared to corresponding vehicles like a four-wheeler. Generally, the vehicle comprises of a body frame assembly made of several tubes welded together. The vehicle has a steerable front wheel and a driven rear wheel. The body frame primarily includes a head pipe disposed at a front end of the body frame, the main tube running across a longitudinal axis of the vehicle and enclosed by several vehicle components, and a down tube. The vehicle is powered by a prime mover. The prime mover includes an internal combustion engine or an electric motor. The engine can be liquid-cooled or air-cooled. The engine or electric motor is mounted to the frame assembly of the vehicle. The engine in the said vehicle is disposed at a lower region and provides a lower center of gravity making it easier to balance and control giving it better turnability and maneuverability. The engine or electric motor is functionally connected to a rear wheel, which provides the forward motion to the vehicle. Typically, pluralities of panels are mounted to the frame assembly of the vehicle that covers various vehicle components. The final drive to the rear wheel of the vehicle is usually a positive drive such as sprocket and chain arrangement.
[00017] The saddle type vehicle having manual transmission comprises a gear shift mechanism. The gear shift mechanism includes a shift drum operable through the gear shift lever. The gear shift lever is operated manually by the vehicle user. More specifically, the gearbox of a saddle-type vehicle includes a multi-plate clutch which is operated manually by the vehicle user to disengage the transmission before the gear shift lever is operated manually to shift gears. The vehicle user uses the foot peg to move the gear shift arm either up or down depending upon whether it is desired to increase or decrease the gear ratio of the vehicle. After moving the gear shift lever, it is allowed to return to an intended position so that shifting may be accomplished again as required.
[00018] The manual shifting is adapted to allow the user to manually shift between pluralities of gear positions. For example, in saddle-type vehicles, a shift-lever position includes a first gear position, a second gear position, a third gear position, a fourth gear position, a fifth gear position, and a Neutral position which corresponds to different gear ratios. While shifting, there is ever-present the problem of shifting into the correct gear. At times, the user fails to provide the correct force to cause the gears to be shifted either down or up as he desires, and is not then prepared for the vehicle operation in the manner contingent upon the particular gear into which it has been shifted. In addition to that, in manual transmission, it is a challenge for design engineers to improve the fuel economy because it largely depends upon the driving skills of the riders. To this end, a gear indication assembly is provided to improve riding comfort and fuel efficiency. The gear indication assembly includes a gear indicator device, a gear position detector, and a control unit. The gear position detector measures the rotation angle of the shift drum installed on the transmission of the saddle type vehicle and converts it to voltage to display the gear position on the gear position indicator. The gear indicator device is provided in an instrument cluster in front of the rider. The rider visually checks and recognizes a selected gear position. More specifically, the gear indicator device is configured to have a numeric character representing a gear portion selected under the different riding conditions. The indication shows that the vehicle is operating in a low gear or higher gear based on which user can make informed decision to select the appropriate gear to save fuel.
[00019] However, it is observed that there has been a problem that the indication of the gear position sometimes become inappropriate giving false indications. More specifically, a displacement of gear position detector occurs which is attached to the side of the shift drum arranged in the vicinity of a driving sprocket that is, to the side of a crankcase. The displacement is due to vibration being transmitted to the gear position detector under different riding conditions including rugged and unmetalled roads. Importantly the gear position detector is positioned close to and parallel to the driving sprocket and a chain adjacent thereto. Therefore, it a challenge for the design engineers to prevent the transmission of vibration to the gear position detector positioned in proximity to the driving sprocket and chain.
[00020] Consequently, the user may likely keep on driving the vehicle in a manner according to the indication of the gear position in the indication device even though such manner of riding is not appropriate.
[00021] Hence, there is a need for a reliable mounting structure for a gear position indicator assembly overcoming all the above problems & trade-offs as well as overcoming problems of the known art.
[00022] Accordingly, the primary object of the present invention is a gear indicator assembly for manual transmissions that provides a reliable and accurate visual indication of the currently selected gear to enable the user to make an informed decision while driving.
[00023] Further objects of the present invention provide a gear indication assembly that can suppress the vibration being transmitted to the gear position detector.
[00024] To achieve the above object, the present invention discloses an internal combustion engine comprising an improved gear indication assembly. The engine assembly includes a crankcase; and a gear position detector. The crankcase includes a shift drum. The shift drum being operatively connected to said gear position detector. A portion of said gear position detector being in contact with a bracket to get accurate gear indication. The bracket comprising a base portion extending from a front end to a rear end. The base portion includes a first portion, a second portion. An outer surface of said second portion being configured at an offset from an outer surface of said first portion.
[00025] As per another aspect of the present invention, said bracket includes a third portion, wherein an outer surface of said third portion being configured to be offset from an outer surface of said first portion.
[00026] In accordance with this configuration, one of the advantages of the present invention is the bracket restricts the movement of the gear position detector under all driving conditions thereby keeps the gear position detector in contact with the shift drum. This eliminates the one side lifting of gear position detector. Further, the bracket is simple and compact in the design such that the third portion is configured to substantially cover the outer surface of the gear position detector to protect it from stone splashing from the rear wheel which conventionally requires additional protection cover. This reduces the number of parts thereby reduces the overall cost of the vehicle.
[00027] Further, in accordance with this configuration, one of the advantages of the present invention is the multiple-step portions effectively distribute and mitigate the higher stress experienced by the bracket attached to the crankcase under different driving conditions without using any reinforcement ribs.
[00028] As per another embodiment of the present invention, said gear indication detector being operatively connected to the gear indication device through a control unit
[00029] As per one embodiment of the present invention, said base portion ramps upwardly through said second portion and said third portion to keep an inner surface of said third portion in contact with the outer upper surface of the gear position detector. An inner surface of said second portion being contact with the said outer lower surface of said gear position detector. The rear end and front end of said bracket being configured to have the lobes.
[00030] In accordance with this configuration, one of the advantages of the present invention is the second portion and the third portion effectively restricts the rotation of the gear position detector to provide reliable measurement of the rotational angle of the shift drum under different driving conditions.
[00031] As per another aspect of the present invention, the thickness of said third portion is less than the remaining portion of said base portion. The first portion includes one or more openings being configured to receive attachment means to detachably attach said bracket to said crankcase.
[00032] In accordance with this configuration, one of the advantages of the present invention being that the bracket is configured to have less weight due to less thickness and opening in the third portion.
[00033] The present subject matter is further described with reference to the accompanying figures. It should be noted that the description and figures merely illustrate the principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[00034] The foregoing disclosure is not intended to limit the present disclosure to the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure, whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is limited only by the claims.
[00035] In the foregoing specification, the disclosure has been described with reference to specific embodiments. However, as one skilled in the art will appreciate, various embodiments disclosed herein can be modified or otherwise implemented in various other ways without departing from the spirit and scope of the disclosure. Accordingly, this description is to be considered as illustrative and is for the purpose of teaching those skilled in the art the manner of making and using various embodiments of the disclosure. It is to be understood that the forms of the disclosure herein shown and described are to be taken as representative embodiments. Equivalent elements, materials, processes or steps may be substituted for those representatively illustrated and described herein. Moreover, certain features of the disclosure may be utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure. Expressions such as “including”, “comprising”, “incorporating”, “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.
[00036] Further, various embodiments disclosed herein are to be taken in the illustrative and explanatory sense, and should in no way be construed as limiting of the present disclosure. All joinder references (e.g., attached, affixed, coupled, connected, etc.) are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer that two elements are directly connected to each other.
[00037] Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.
[00038] It will also be appreciated that one or more of the elements depicted in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed or rendered as inoperable in certain cases, as is useful in accordance with a particular application. Additionally, any signal hatches in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically specified.
[00039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[00040] With reference to Figure 1, a description is made of an entire schematic structure of a saddle type vehicle two-wheeled vehicle (hereinafter “vehicle”) (100). The vehicle (100) includes a body frame (101) to support different parts of said vehicle (100). A head pipe (102) is provided at a front end of the body frame (101). The head pipe (102) supports a steering shaft (not shown) rotatably in a certain range. In an upper portion of the head pipe (102), a handlebar assembly (103) is rotatably integrally connected to the steering shaft (not shown). The handlebar assembly (103) is used to steer the vehicle (100) and is connected to a front wheel (104) through the steering shaft (not shown). An upper portion of the front wheel (104) is covered by a front fender (105) which prevents mud and water from getting deflected towards the steering shaft (not shown). Further, a front fork assembly (106) is supported partially on the front fender (105) and is connected to the front wheel (104). In a front portion of the body frame (101) a fuel tank (107) is arranged immediately behind the handlebar (103) and is disposed over an internal combustion engine assembly, (hereinafter ‘engine assembly’) (108). A seat (109) is placed behind the fuel tank (107). The seat (109) includes a front rider portion and rear pillion portion. For the safety of the rider and in conformance with the traffic rules, a headlamp unit (110) and a turn signal lamp unit (111) is provided in a front portion of the vehicle (100). The headlamp unit (110) and the turn signal lamp unit (111) are housed in a headlamp housing assembly (112). Suspension systems are provided for comfortable steering of the vehicle (100) on the road. The front fork assembly (106), which forms the front suspension system, serves as a rigidity component just like the body frame (101). The front fork assembly (106) clamped to the head pipe (102) through an upper bracket (113a) and a lower bracket (113b) is capable of being moved to the left and right. Further, a rear suspension system, which is a hydraulic damped arrangement, is connected to the body frame (101). The rear suspension system comprises at least one rear suspension preferably on a left-hand side of the vehicle (100). However, in a vehicle (100) with two rear suspensions, the same may be disposed of on the left side and the right side respectively of said vehicle (100). The engine assembly (108) is mounted to a front lower portion of the body frame (101) by means of a first engine mounting bracket (not shown). The engine assembly (108) is equipped with an exhaust system that includes an exhaust pipe (not shown) connected to the engine assembly (108) and a muffler (not shown) connected to the exhaust pipe. The muffler (not shown) extends rearwards along the right side of a rear-wheel (114). Power from the engine assembly (108) is transmitted to a driven sprocket (119) through a transmission assembly (118), to drive and rotate a rear wheel (114). Particularly, the speed change is achieved by the operation of a gear shift linkage assembly (115) which is operatively connected to a gear shift shaft (not shown). Thus, power from the engine assembly (108) is transmitted to the rear wheel (114) rotatably supported at a rear end of a swing arm (116). A rear fender (117) for covering an upper side of the rear wheel (114) is mounted to a rear portion of the body frame (101) to prevent mud and water splashed by the rotating rear wheel (114) from entering the muffler, the engine assembly (108).
[00041] Figure 2a illustrates a left side view and a localized view of the engine assembly, in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. Figure 2b illustrates a perspective view of the engine assembly (108), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. For sake of brevity, Figure 2a and Figure 2b will be discussed together. The engine assembly (108) comprises a crankcase (201), a cylinder block (202) mounted to the crankcase (201), and a cylinder head (203) that is mounted to the cylinder block (202). The cylinder head (203) and the cylinder block (202) are collectively referred to as a cylinder portion (203, 202). A cylinder head cover (204) is mounted to the cylinder head (203) that is casing a valve train (not shown). The cylinder head cover (204), the cylinder head (203) and, the cylinder block (202) are secured to the crankcase (201) through one or more bolts. The crankcase (201) includes a crankcase-left member (201L) disposed on the left-hand side LH and a crankcase-right member (201R) disposed adjacently to the crankcase-left member on the right-hand side RH, which are adapted to support engine parts including cylinder portion (203, 202). Also, the crankcase (201) is provided with apertures and a mounting portion(s) to support various engine parts. A side cover (205) is detachably attached to one lateral side of the crankcase (201) using attachment means (206), which is as per an embodiment on a left-hand side LH lateral face of the crankcase (201L). A gear position detector (207) is located outside of a sidewall of the LH Crankcase (201L) and near the outer periphery of a side cover (205). As per illustrated embodiment, a cable (211) of the gear position detector (207) is operatively connected to a display unit (not shown) configured to display gear position via the control unit (not shown). As per alternative embodiment, the gear position detector (207) being operatively connected to the control unit (not shown) via wireless communication. The gear position detector (207) is operatively connected to a shift drum (209) to measure its rotation while manual shifting of gears by the user. As per illustrated embodiment, the gear position detector (207) is a contact terminal switch being configured to measures the rotation angle of the shift drum (209) and converts it to voltage to display the gear position on the gear indicator device (not shown). A bracket (208) is attached to the crankcase LH (201L) through attachment means (210). The attachment means (210) includes threaded fasteners. The bracket (208) being configured to reliably mount the gear position detector (207) to the crankcase LH (201L).
[00042] Figure 3 illustrates a partial cut section view of the engine assembly (108) and a localized enlarged view of a Belleville washer (301), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. A camshaft (not shown) is rotatably supported by the cylinder head (203) to open/close an intake valve (not shown) and an exhaust valve (not shown). As per illustrated embodiment, an exhaust valve (not shown) is operated via a rocker arm (303) connected to the camshaft (not shown). The rocker arm (303) is connected to the rocker arm shaft (304). Importantly, on the intake side, a Belleville washer (301) is provided between a rocker arm shaft (304) and a plug rocker arm (302). The Belleville washer (301) exerts an axial load on the rocker arm shaft (304) statically to arrest the relative motion between the rocker arm (303) and rocker arm shaft (304) which eliminates the noise from the rocker arm zone of the cylinder head (203).
[00043] Figure 4 illustrates a perspective view, a side view and a top of the bracket (208), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. The bracket (208) comprising a base portion (208A) extending from a front end (208F) to a rear-end (208R). Further, the rear end (208R) and front end (208F) of said bracket (208) being configured to have lobes. The base portion (208A) includes a first portion (208AA), a second portion (208AB), and a third portion (208AC). An outer surface (208ABO) of said second portion (208AB) being configured to be at a lateral offset from an outer surface (208AAO) of said first portion (208AA). Further, an outer surface (208ACO) of said third portion (208AC) being configured to be at a lateral offset from an outer surface (208AAO) of said first portion (208AA) in a longitudinal direction (A-A’) of the bracket (208).
[00044] Figure 5 illustrates a localized enlarged cut section view and a partial cut section view of the engine assembly (108) across the B-B axis as shown in figure 2(a), in accordance with one example implementation of the present subject matter where few parts are omitted from the figures. The shift drum (209) is coupled to a gear arm (not shown) that is coupled to a gear shift lever (not shown) for shifting gears. The gear position detector (207) is mounted to the crankcase (201) for identifying the gear position. The base portion (208A) of the bracket (208) ramps upwardly through said second portion (208AB) and said third portion (208AC) to keep an inner surface (208ACI) of said third portion (208AC) in contact with the upper outer surface (207UO) of the gear position detector (207). The inner surface (208ABI) of said second portion (208AB) being abut with said outer lower surface (207LO) of said gear position detector (207). Importantly, the thickness of said third portion (208AC) is less than the remaining portion of said base portion (208A). The first portion (208AA) includes one or more openings (208AFO, 208ASO). At least one of said opening (208AFO) being configured to receive attachment means (210) to detachably attach said bracket (208) to said crankcase LH (201L).
[00045] While the present invention has been shown and described with reference to the foregoing preferred embodiments, it will be apparent to those skilled in the art that changes in form, connection, and detail may be made therein without departing from the spirit and scope of the invention.

List of references:

A-A’ Longitudinal axis of the bracket
F Front

R Rear
100 Vehicle
101 Body frame
102 Head pipe
103 Handle bar
104 Front wheel
105 Front fender
106 Front for assembly
107 Fuel tank
108 Engine assembly
109 Seat
110 Head lamp unit
111 Turn signal lamp
112 Head lamp housing assembly
113a & 113b upper bracket & lower bracket
114 Rear wheel
115 Gear shift linkage assembly
116 Swing arm
117 Rear fender
118 Transmission assembly
119 Driven sprocket
201 Crankcase
201L -Crankcase LH
201R -Crankcase RH
202 Cylinder block
203 Cylinder head
204 Cylinder head cover
205 Side cover
206 Attachment means
207 Gear position detector
207UO Outer upper surface of the gear position detector
207LO lower outer surface of the gear position detector
208 Bracket
208R Rear end of the bracket
208F Front end of the bracket
208A Base portion
208AA First portion
208AAO Outer surface of first portion
208AAI Inner surface of first portion
208AB Second portion
208ABI Inner surface of Second portion
208ABO Outer surface of Second portion
208AC Third portion
208ACI Inner surface of third portion
208ACO Outer surface of third portion
208AFO Opening in first portion
208ASO Opening in third portion
209 Shift drum
210 Attachment means
211 Cable
301 Washer
302 Plug rocker arm
303 Rocker arm
304 Rocker arm shaft