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Message started by rl153 on 03/12/10 at 17:22:12

Title: Prime function
Post by rl153 on 03/12/10 at 17:22:12

I just started my bike for the first time in 4 months. I put it on choke to start but it took quite a few tries before it started . Is this a situation where I should have put the petcock on prime? Thanks.

Title: Re: Prime function
Post by verslagen1 on 03/12/10 at 17:27:17

yes, when sitting for a long time it's likely to be dry or at least low.
put it on prime to get it filled right away.

Title: Re: Prime function
Post by rl153 on 03/12/10 at 17:29:25

Do you use the choke the same way when you use the prime,then how long do you let it run on prime,or do you not start it with the prime function?Thanks

Title: Re: Prime function
Post by verslagen1 on 03/12/10 at 17:49:13

I turn prime off when the bike is started or when ever I remember.

choke depends on the bike. current bike doesn't like choke to start even on these cold (40°) mornings. one click out to warm up though.

Title: Re: Prime function
Post by rl153 on 03/12/10 at 17:52:56

Thanks,appreciate the info.

Title: Re: Prime function
Post by Routy on 03/13/10 at 17:27:39

Just to clarify a touch,....there is no difference tween prime, run, or reserve, as far as the running of the bike.

Run = gas will flow from the tank only when the engine is being cranked and/or running, but will drain the tank only down to the reserve amount

Prime = gas will flow from tank and have gravity pressure to the carb all the time, but will drain the tank only down to the reserve amount ??

Reserve = gas will flow till the tank is completely empty as long as the engine is being cranked or running

ps: Did I say that right I hope ? :o

On edit,.....I stand corrected,
"prime" will drain the tank dry

Title: Re: Prime function
Post by Yonuh Adisi on 03/13/10 at 21:27:09

27283229353320222A2433410 wrote:

Just to clarify a touch,....there is no difference tween prime, run, or reserve, as far as the running of the bike.

Run = gas will flow from the tank only when the engine is being cranked and/or running, but will drain the tank only down to the reserve amount

Prime = gas will flow from tank and have gravity pressure to the carb all the time, but will drain the tank only down to the reserve amount

Reserve = gas will flow till the tank is completely empty as long as the engine is being cranked or running

ps: Did I say that right I hope ? :o

Actually from what I understand Prime will drain past reserve. I am not certain on this but I believe it has been posted before about that issue.

Title: Re: Prime function
Post by Serowbot on 03/13/10 at 22:47:59

Yes, what Yonuh said...

Prime will run you dry,... there is no reserve after prime drys you out....
Use Prime setting to drain your tank....

Title: Re: Prime function
Post by justin_o_guy2 on 03/14/10 at 07:55:05

I switch to prime sometimes when Im just running down the road, to see if it starts running bad.

Title: Re: Prime function
Post by rl153 on 03/14/10 at 07:56:40

So when do you use prime,and what's the best way to use it?

Title: Re: Prime function
Post by Serowbot on 03/14/10 at 08:15:05

When the bike has been sitting more than a week,
or to drain the tank to work on the bike,
or when you have done carb work and need to refill the float bowls...
That's it...

Title: Re: Prime function
Post by Routy on 03/14/10 at 08:20:14

I stand corrected on "prime" leaving reserve,..... and edited my above post.

Thanks

Title: Re: Prime function
Post by justin_o_guy2 on 03/14/10 at 08:24:24

Prime & reserve use the same inlet in the tank. Run has a taller pickup, so, it runs out of gas while thers still some in the tank. The difference between prime & reserve is that reserve is running thru the vac operated part of the petcock. Prime delivers fuel to the carb, even if the engine isnt running.

Title: Re: Prime function
Post by rl153 on 03/14/10 at 17:16:41

So should you use prime while the bike is off then switch it to run before you start the bike, or start it on prime,or is it effective both ways?

Title: Re: Prime function
Post by justin_o_guy2 on 03/14/10 at 17:54:24

Either one is fine. You only need to use prime if the bikes been sitting long enough that you wonder if fuel had evaportaed out of the bowl. Prime, well, it Primes the carb.

Title: Re: Prime function
Post by bill67 on 03/14/10 at 18:33:37

You never really need to use prime at all during riding season,Only if you run out of gas.