POWERHEAD
Page 4A-2 90-884294 OCTOBER 2001
Specifications
Block
Type 60° V, 2 Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 153 cu. in. (2.5 Litre). . . . . . . . . . . . . . . . . . . . . . . . .
Reed Valve Opening
Reed Stand Open (Max.) 0.020 in. (0.50 mm). . . . . . . . . . . . . . .
Cylinder Bore
Dia. Standard 3.501 in. (88.925 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Dia. 0.015 in. Oversize 3.516 in. (89.306 mm). . . . . . . . . . . . . . . . .
Taper/Out of Round Max. 0.003 in. (0.0762 mm). . . . . . . . . . . . . . .
Piston
Dia. Standard 3.494 in. ± .001 in. (88.748 mm ± .025 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Dia. 0.015 in. Oversize 3.509 in. ± .001 in. (89.129 mm ± .025 mm). . . . . . . . . . . . . . . . .
IMPORTANT: Using a micrometer, measure dimension “B” at location shown. Dimen-
sion “B” should be 0.008 in. or less than dimension “A”.
Dimension “A”
at Right Angle
(90
°) to Piston
Pin
Dimension “B” ( in
line with Piston Pin)
1/2 in.
(12.7mm)
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