Pg260F1 Starter Motor; Pg260F1 Specifications; Torque Specifications; Lubricants/Sealants - Mercury MerCruiser MCM 454 Mag MPI Service Manual

STARTING SYSTEM

PG260F1 Starter Motor

PG260F1 Specifications

Engine Engine
Rotation Volts
LH
Brush Spring Length
Pinion Clearance
Bearing Depth (Gear)
Bearing Depth (Housing)

Torque Specifications

Fastener Location
Starter Mounting Bolts
All Other Fasteners

Lubricants/Sealants

Quicksilver Liquid Neoprene
Quicksilver 2-4-C Marine Lubricant With Teflon

Description

The Permanent Magnet Gear Reduction (PG200 and PG250) starter motors feature small
permanent magnets mounted inside the field frame (NOTE: The actual configuration of
these magnets differs between the PG200, PG250 and PG260; the field frames with
permanent magnets are not interchangeable. Otherwise, the units are similar.) These
magnets take the place of current-carrying field coils mounted on iron pole pieces. Internal
gear reduction, approximately 4 to 1, through planetary gears results in armature speeds
in the 7000 rpm range. The armature and drive shaft are mounted on roller or ball bearings
in place of bushings. The solenoid switch, plunger, return spring, and shift lever are
permanently mounted in the drive housing.
The starter motor is designed to operate under great overload and produce a high
horsepower for its size. It can do this only for a short time, since considerable heat
accumulates and can cause serious damage. For this reason, the cranking motor
must never be used for more than 30 seconds at any one time. Cranking should not
be repeated without a pause of at least 2 minutes to permit the heat to escape.
Index
Page 4A-34
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Delco I.D. Number
9000839 - 9000840
No Load Test
Min.
Max. Amp
Amps
11.5 40 90
Description
MerCruiser Part Number
Min. rpm Max. rpm
3200 4800
Length New - 0.36 - 0.42 in. (9.2 - 10.7 mm)
Length Used - 0.18 - 0.23 in. (4.62 - 5.98 mm)
0.009 - 0.160 in. (0.23-4.06 mm)
Flush - Inside
.009-.017 (0.4mm) Maximum
CAUTION
SERVICE MANUAL NUMBER 23
50-807904
Brush Spring p g
Tension Oz.
(Grams)
lb-ft Nm
30 41
Tighten Securely
Part Number
92-25711--3
92-825407A3
90-861326--1 MARCH 1999