Cooling System; Flushing; Water Intake Screen; Water Pump - BRP Johnson J25R4SUR Service Manual

MAINTENANCE

COOLING SYSTEM

COOLING SYSTEM
Check the condition of cooling system compo-
nents regularly. The outboard cooling system con-
sists of:
•
water intake screens
•
overboard water pressure indicator
•

water pump

•
all internal water passages
•
thermostat

Flushing

Flush the outboard with fresh water following each
use in brackish, salt, or polluted water to minimize
the accumulation of scale and silt deposits in cool-
ing system passages.
WARNING
Prevent injury from contact with rotating
propeller; remove the propeller before
flushing.
Procedure
Remove propeller and shift the outboard to NEU-
TRAL.
Install flushing device and garden hose.
Flushing Device
START outboard. Run outboard at IDLE only for at
least five minutes.
52
IMPORTANT:
outboard above fast idle. Water must flow from the
water pump indicator. If it does not, shut off the
outboard and repair as needed.
Shut OFF the outboard. Leave the outboard in
VERTICAL (DOWN) position long enough for the
water to drain from the powerhead completely.
1. Water pump indicator
Remove outboard from tank and install propeller.

Water Intake Screen

Inspect condition of water intake screen. Clean or
replace as needed.
1
1. Water intake screen
Water Pump
005951
Inspect water pump every 200 hours of operation.
Refer to WATER PUMP on p. 202.
To prevent damage, do not run
1
drc4952
005941