Type

Single Cylinder, 4 stroke. Two overhead

Valves operated by overhead Camshaft.

Bore and Stroke

74 mm.     81 mm.

Cubic Capacity (Swept Volume)

348 c.c.

Rated Horse-Power
(A.C.U. Rating)

3.48 H.P.     (One Horse Power per 100 c.c.).

Tappet Clearances (for Running)

Inlet .006-in.    Exhaust   .010-in.

Tappet Clearances (for Timing)

Inlet .025-in.                  Exhaust .025-in.

Clearances set and checked when Engine is cold

Position of Engine Serial Number

Stamped (following the Serial letters"KSS") on near side of Crankcase below Cylinder Base Flange. Letters must be quoted with Serial number when referring to machine.

GEARBOXES.

Type, 4 speed. Constant mesh. Foot controlled.

Ratios: Sprocket

15 tooth

Top 6.42

3rd 7.75

2nd 10.2

1st 14.7

16

6.02

7.26

9.55

13.8

17

5.66

6.84

9.0

13.0

Primary Drive

Driving Sprocket 21 teeth.

Rear Driving Sprocket Variable (see above).

Driven Sprocket 44 teeth.

Rear Driven Sprocket 46 teeth.

Chains

Primary : Pitch and Width

.5-in.         .305-in.

Roller Diameter

.335-in.

Number of Pitches :

67.

Rear : Pitch and Width

.625-in.  .380-in.

Roller Diameter

.4-in.

Number of Pitches.

99.

Wheels

KTS Front WM3 x 19.

KSS Front WM1 x 21.

Rear WM3 x 19.

Rear WM2 x 20.

Tyres

Front 26 x 3.25-in.

Front 21 x 3-in.

Rear 26 x 3.5-in.

Rear 20x 3.25-in.

Frame

Serial Number stamped on right-hand side of upper front Engine Lug.