Name: Yamaha TDM850 1996
Brand: Yamaha
Rating: 5 (1 reviews)

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4-17

VALVE AND VALVE SPRING

ENG

NOTE:

INSPECTION

1. Measure:

S Stem-to-guide clearance

Stem-to-guide clearance =

Valve guide inside diameter

–

Valve stem diameter

Out of specification  Replace valve guide.

Stem-to-guide clearance:

Intake:

0.010 X 0.037 mm

<Limit>: 0.08 mm

Exhaust:

0.025 X 0.052 mm

<Limit>: 0.10 mm

2. Replace:

S Valve guide

Replacement steps:

Heat the cylinder head in an oven to 100_C to

ease guide removal and installation and to main-

tain correct interference fit.

S Remove the valve guide using the valve guide

remover

S Install the valve guide (new) using the valve

guide installer

2 and valve guide remover 1.

S After installing the valve guide, bore the valve

guide using the valve guide reamer

3 to obtain

proper stem-to-guide clearance.

Valve guide remover, installer and

reamer (5.5 mm):

90890-04016

Reface the valve seat after replacing the valve

guide.

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Yamaha TDM850 1996 Specifications

General