Mercury Optimax 115 User Manual

POWERHEAD
90-855347R1 JANUARY 1999 Page 4A-43
6. Install new piston pin lockrings (one each end of piston pin) with Lockring Installation
Tool (91-77109A1).
7. Make sure lockrings are properly seated in piston grooves.
51086
51086
a
a
b
a-Lockring Installation Tool (91-77109A1)
b-Lockring
Piston and Piston Ring Combinations
153 CU. IN. (2508 cc) MODELS
All 153 cu. in. (2508 cc) models have two half keystone (half tapered) rings.
Pistons with two half keystone (half tapered) rings
0.056 in. (1.4 mm)
0.056 in. (1.4 mm)
a
b
a-Half Keystone (half tapered) Piston Ring
b-Enlarged View of Piston Ring Grooves

Mercury Optimax 115 Specifications

General

Fuel Induction System	2-stage Direct Fuel Injection (DFI)
Alternator Amp	60 amp / 756 watt
Steering	Remote
Cylinders	3
Starting	Electric
Displacement	1.5 L
Bore x Stroke	89 x 76 mm
Shaft Length	20" (508 mm)
Horsepower	115 HP