starting engine after prolonged inactivity
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Joined: 08 Nov 2005
Posts: 42

Mon Apr 03, 2006 7:37 am quote
Hi, I just picked up my GT200 and Im lookin through the manual and it says" to start the engine after prolonged inactivity or in cold climates twist throttle 2 or 3 times before pressing the starter button."

What is the reason for this? [/b]
2012 BMW G650GS, 2006 GTS,
Joined: 15 Jan 2006
Posts: 2083
Location: Snohomish County, WA
Mon Apr 03, 2006 7:42 am quote
i think this might be to prime the carb a little bit...
2004 Vespa ET4
Joined: 07 Nov 2005
Posts: 242
Location: Toronto, ON
Mon Apr 03, 2006 9:30 am quote
I started my ET4 yesterday after 4 months of inactivity. Gave er a couple of twists and she fired right up!
Joined: 11 Nov 2005
Posts: 447

Mon Apr 03, 2006 11:54 am quote
On carbureted bikes, twisting the throttle causes the accelerator pump to squirt a little extra fuel into the venturi. If the scooter has been sitting, the extra fuel could encourage it to start more quickly.

This technique should only be used if necessary to get it started, as it can wash the oil off the combustion chamber walls. Some engine people will tell you that always twisting the throttle will add too much fuel to the cylinder on a regular basis can cause premature cylinder wear because it washes away the thin film of oil that should be there.
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