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Sherco Tech / Re: SE-R 300 Factory 2020 Randomly no spark and won't start
« on: December 09, 2020, 09:02:34 PM »
Well, that's a step backwards...
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General Discussion / Re: Should i go A or B size for 1st piston?
« on: November 09, 2020, 05:49:12 PM »
I ride trails, not trailers.
Trailerrider383 iş correct. But many "mechanics" I had experience with do just put the next bigger piston.
Also Sherco provides only two size oem pistons, and if I am not wrong prox has 4 sizes available. Tokyo offroad in YouTube has a very good video on showing how to take cylinder bore dimenson measurements,
-erdat
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General Discussion / Re: Should i go A or B size for 1st piston?
« on: November 08, 2020, 12:40:56 PM »
You have to match the piston to the bore for the proper clearance. Which means precision measurement of both.
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Sherco Tech / Re: 450 Factory stuttering at low load
« on: October 29, 2020, 05:31:02 PM »
Water in the gas maybe? Dump it and try new gas.
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General Discussion / Re: Analyzing what makes Cody Webb so damn good.
« on: October 24, 2020, 07:04:51 PM »I see he is riding the 300 SEF Factory in the endurocross series starting next weekend. It will be interesting to see how he does against the 350's and 450's in that class.
He didn't finish first either night. I think they need to put a big bore on the 300. Who knows, maybe they already have.
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General Discussion / Re: Analyzing what makes Cody Webb so damn good.
« on: October 16, 2020, 07:42:15 PM »
I see he is riding the 300 SEF Factory in the endurocross series starting next weekend. It will be interesting to see how he does against the 350's and 450's in that class.
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General Discussion / Re: Fuel "boiling" out the tank vent 20' 300 SEF Factory
« on: August 09, 2020, 06:15:32 PM »This is what I invented to test. A tiny fuel filter. I will see if it flows enough air to vent properly.
It didn't solve the problem. The fuel boils just like the stock check valve setup did. It runs fine but somehow fuel still gets through the felt filter I added and drips on the front fender. New idea: I took the front fender off and put air filter foam up into the steering stem hole. Maybe that will catch the fuel before it drips onto the fender.
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General Discussion / Re: Fuel "boiling" out the tank vent 20' 300 SEF Factory
« on: July 29, 2020, 06:08:18 PM »
This is what I invented to test. A tiny fuel filter. I will see if it flows enough air to vent properly.
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General Discussion / Re: Fuel "boiling" out the tank vent 20' 300 SEF Factory
« on: July 23, 2020, 07:54:14 PM »Took out the check valve...problem solved. Rode in 90 degree heat the other day in slow technical wooded and sandy conditions and if ever the bike was hot it was then. No seepage down my front fender.
I removed the check valve on my 2020 300 SEF Factory and it solved the fuel boiling noise but it made the fender staining problem worse!
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General Discussion / Re: 300 se front sprocket nut size. are you kidding me?
« on: July 07, 2020, 03:32:55 PM »
Don't you have an 1 1/8 socket? Only .023 bigger than 28 mm.
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General Discussion / Re: 2020 sef 300 factory suspension
« on: June 10, 2020, 06:38:37 AM »
Also if you can't find the suspension info in the manual for the KYB suspension, you will find it in the French section. Clicker settings for comfort, standard and sport. The spring rate for your weight info is in there also.
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General Discussion / Re: 2020 sef 300 factory suspension
« on: June 08, 2020, 07:13:04 PM »
The suspension on my 2020 300 SEF Factory didn't break in until 20 plus hours. It is a lot plusher now. Idaho rider also.
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Sherco Tech / Re: Leaking water cooling from a hole ....
« on: May 18, 2020, 05:33:34 PM »
That is a weep hole for the water pump.
The weep hole lies between two seals - one that keeps motor oil from the water pump (the oil side water pump seal) and the other to keep coolant in the pump. When the coolant side seal fails fluid drips from the weep hole and eventually leaks out the cover.
https://www.motosport.com/blog/bad-water-pump-symptoms-on-a-dirt-bike-or-atv
The weep hole lies between two seals - one that keeps motor oil from the water pump (the oil side water pump seal) and the other to keep coolant in the pump. When the coolant side seal fails fluid drips from the weep hole and eventually leaks out the cover.
https://www.motosport.com/blog/bad-water-pump-symptoms-on-a-dirt-bike-or-atv
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Classifieds / Re: 2019 300 SEF-R $6900
« on: May 04, 2020, 07:21:41 PM »
Ok, what are you buying next?
You might want to mention where in the world you reside.
You might want to mention where in the world you reside.
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Sherco Tech / Re: 2019 Sherco SEF 250 high idle, rpms.
« on: April 24, 2020, 09:39:14 PM »
Yeah, my 2020 300 SEF Factory does some weird things after shutting it off for a bit also. No idea what causes it.