POWERHEAD
Page 4A-2 90-855347R1 JANUARY 1999
PISTON
DIAMETER
Dimension
“A” at Right
Angle (90
°)
to Piston
Pin
0.700
17.78mm
3.4925 in. ± .0005 in.
(88.7095 mm ± .0127 mm)
Using a micrometer, measure dimension
“A” at location shown. Dimension “A”
should be 3.4925 in. ± .0005 for a STAN-
DARD size piston (new) Dimension “A”
will be 0.001 - 0.0015 less if coating is
worn off piston (used)
REEDS Reed Stand 0pen (Max.) 0.020 in. (0.50 mm)
Special Tools
1. Lifting Eye 91-90455
2. Powerhead Stand 91-30591A1
3. Piston Ring Expander 91-24697
4. Lockring Removal Tool 91-52952A1
5. Piston Pin Tool 91-74607A1
6. Driver Head 91-55919
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