Primer for 2004 550 sport touring? - Snowmobile World : Your #1 Snowmobile Forum
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post #1 of 2 (permalink) Old 05-09-2015, 12:00 PM Thread Starter
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Primer for 2004 550 sport touring?

New rings and pistons on 2004 550 sport touring and takes too many pulls to start. Thought a primer might be the solution but don't know how to install. Anyone got advice?
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post #2 of 2 (permalink) Old 05-09-2015, 12:53 PM
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Before installing a primer, make sure the carbs are spotlessly clean, especially the pilot jet and the air and fuel passages to the pilot jet. Then make sure that the enrichment circuit (choke) is working properly. The plungers should move easily with the lever. If the plungers are stuck to the bottom, no extra gas can be introduced into the engine with application of the choke lever.

Also, check the fuel pump output. Remove a fuel line from one of the carbs and put it in a clear container. With the ignition off, pull the rope a few times. There should be a bit of fuel come out on each pull.

What's the compression on the engine now? How many miles on the new rings/pistons? What kind of oil did you use to break in the engine? What do the plugs look like after a couple of pulls of the rope? Do the plugs have a good, bright blue spark? More questions...

If the fuel/electrical/mechanical systems of the engine are working properly, you shouldn't need a primer to get that engine to easily start. Time for a bit of troubleshooting to figure out where the weak link is...

2007 RMK 700, 2008 RMK 600, 1995 AC Prowler 2-up, 1980? AC Cheetah
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