1968 Evinrude Big Twin, Big Twin Electric, Lark 40 HP Outboards Service Manual, Page 81Get this manual
PLUNGER
WINDINGS
REMOVAL OF STARTER FROM POWER HEAD
Due to the construction of the starter motor, maintenance operations are generally limited to periodic checking for 100seness of mountingUn1ess it is certain that the starter motor requires attention, do not remove it for overhau1thorough check shou1d made of the battery, cables, starting s01enoid, and switch as outlined in the Trouble Check Chart in Section 2Check the starter motor making these two tests: 1Current Draw TestDisconnect and ground the spark plug wiresInsert 400 capacity ammeter in series in the starter ground circuitOperate starter and note current drawDuring cranking it shou1d not exceed 120 amps (after inita1 surge)See Figure 7-73404
Figure 7-5Starter S01enoid The starter motor drive pinion is disengaged when at rest and is made to mesh with the flywhee1 ring gear the rotation of the starter motor armatureAfter the motor has started, the starter pinion is driven faster than the starter motor shaft and moves down the screw shaft out of mesh with the flywheelSee 7-6 and 7-9The safety switch opens the starter circuit, preventing accidenta1 engaging of the starter motor, whenever the throttle 1ever is set beyond start position p1unger which rides The switch is operated the exhaust coverAdjustment of the safety switch is covered in Section 4, IgnitionFIELD AND FRAME ASSEMBL