Service manual

CLOSED COOLED MODELS
SERVICE MANUAL NUMBER 26
90-861329--1 MARCH 1999 Page 6B-3
Coolant Recovery Bottle
Before starting engine each day, ensure that coolant is visible in coolant recovery bottle.
If coolant is not visible, check fresh water section of cooling system (including coolant recov-
ery system) for leaks and repair, as necessary. Refill fresh water section with recommended
coolant solution, as outlined under “Changing Coolant,” following.
If coolant is visible, start engine and run until it reaches normal operating temperature, then
recheck coolant level in coolant recovery bottle. Coolant level MUST BE between the ADD
and FULL marks (on front of bottle).
WARNING
Allow engine to cool before removing pressure cap, as sudden loss of pressure
could cause hot coolant to boil and discharge violently. After engine has cooled,
turn cap 1/4 turn to allow any pressure to escape slowly, then push down and turn
cap all the way off.
If level is low, remove fill cap from coolant recovery bottle and add required amount of cool-
ant solution. Use a 50/50 mixture of ethylene glycol antifreeze and pure, soft water for cool-
ant additions. If frequent additions of coolant are required, check fresh water section for
leaks.
IMPORTANT: ALCOHOL OR METHANOL BASE ANTIFREEZE OR PLAIN WATER ARE
NOT RECOMMENDED FOR USE IN COOLING SYSTEM AT ANY TIME. In areas where
ethylene glycol is not available, and the possibility of freezing does not exist, it is
permissible to use a solution of rust inhibitor and pure, soft water (mixed to
manufacturer’s recommendations).
Occasionally, ensure that coolant recovery system is functioning properly by removing
pressure cap from heat exchanger and checking level. Coolant level should be up to bottom
of heat exchanger filler neck. If low, examine entire fresh water section (especially coolant
recovery system) for leaks and repair, if necessary.
IMPORTANT: When reinstalling pressure cap, be sure to tighten it until it contacts
stops on filler neck.
Index