Yamaha TDM850 1996 User Manual

4-9
CAMSHAFT
ENG
NOTE:
CAUTION:
8. Remove:
 Timing chain guide (exhaust)
 Camshaft cap
1
Remove the camshaft cap bolts in a crisscross
pattern, working from the inside to the outside.
The bolts (camshaft caps) must be removed
evenly to prevent damage to the cylinder head,
camshafts or camshaft caps.
INSPECTION
1. Inspect:
 Cam lobes
Pitting/Scratches/Blue discoloration  Re-
place.
2. Measure:
 Cam lobes length
a and b
Out of specification  Replace.
Cam lobes length limit:
Intake:
a
35.85 mm
b 27.85 mm
Exhaust:
a
35.85 mm
b 27.85 mm
3. Measure:
 Runout (camshaft)
Out of specification  Replace.
Runout (camshaft):
Less than 0.03 mm

Yamaha TDM850 1996 Specifications

General

Displacement	849 cc
Bore x Stroke	89.5 mm x 67.5 mm
Compression Ratio	10.5:1
Fuel System	Carburetor
Transmission	5-speed
Final Drive	Chain
Front Suspension	Telescopic fork
Rear Suspension	Monoshock
Front Brakes	Dual disc
Rear Brakes	Single disc
Rear Tire	150/70-17
Fuel Capacity	20 liters
Seat Height	825 mm
Width	800 mm
Engine Type	4-stroke, parallel-twin
Ignition	Digital