1st Gear Bogging and Possible Wheel Bearing Issues

The Red Scourge · April 30th, 2018, 07:39 AM

Hey folks. Haven’t posted in quite a while. After sitting for about a year I cleaned the carbs on my ‘08 250. It runs well now, except when starting in 1st gear the engine bogs pretty hard. If I let out the clutch super slow, it will get going. Is this possibly an issue with the mixture setting? I set it to what is listed in the FSM. I think it was 2-1/2 turns out for the left and 1-3/4 turns out for the right. I’ve never done it like that before, but it is the service manual. Any suggestions?

Also, while lubing the chain with the bike on a rear stand I noticed some play in the rear sprocket. If I grab it, it’ll rotate about 1/2 an inch either way without the wheel moving. If I grab the wheel at the top and bottom, there’s no play side to side. Is this possible wheel bearings needing replacement or maybe the axle isn’t torqued correctly? Thanks!

DannoXYZ · April 30th, 2018, 08:40 AM

Does 1st take off better with choke ON? or OFF?

Rear hub is missing the cush-drive rubbers.

The Red Scourge · April 30th, 2018, 08:42 AM

I’ll have to check the choke vs. off choke when I get home. Thanks!

jkv45 · April 30th, 2018, 11:12 AM

How old is the gas? Is the air filter clean? Have the carbs been synced lately?

If that's all OK, you may need to try again on the carb cleaning. Did you remove all the jets and clean the passages? The Pilot Jets have small cross-drilled holes that easily plug. At times, replacing the jets with new is the best/only solution - and not a bad idea in general.

The other issue is excessive play in the cush drive. Here's the solution - https://faq.ninja250.org/wiki/How_to...the_cush_drive

April 30th, 2018, 07:39 AM	#1
The Red Scourge ninjette.org member Name: James Location: Asheville, NC Join Date: Oct 2013 Motorcycle(s): '76 Yamaha RD400, '71 Kawasaki G3SS, '88 Honda CBR400RR, '90 Yamaha FZR400/600 hybrid Posts: 138	1st Gear Bogging and Possible Wheel Bearing Issues Hey folks. Haven’t posted in quite a while. After sitting for about a year I cleaned the carbs on my ‘08 250. It runs well now, except when starting in 1st gear the engine bogs pretty hard. If I let out the clutch super slow, it will get going. Is this possibly an issue with the mixture setting? I set it to what is listed in the FSM. I think it was 2-1/2 turns out for the left and 1-3/4 turns out for the right. I’ve never done it like that before, but it is the service manual. Any suggestions? Also, while lubing the chain with the bike on a rear stand I noticed some play in the rear sprocket. If I grab it, it’ll rotate about 1/2 an inch either way without the wheel moving. If I grab the wheel at the top and bottom, there’s no play side to side. Is this possible wheel bearings needing replacement or maybe the axle isn’t torqued correctly? Thanks! __________________________________________________ "When in doubt, gas it!"

April 30th, 2018, 08:42 AM	#3
The Red Scourge ninjette.org member Name: James Location: Asheville, NC Join Date: Oct 2013 Motorcycle(s): '76 Yamaha RD400, '71 Kawasaki G3SS, '88 Honda CBR400RR, '90 Yamaha FZR400/600 hybrid Posts: 138	I’ll have to check the choke vs. off choke when I get home. Thanks! __________________________________________________ "When in doubt, gas it!"

April 30th, 2018, 11:12 AM	#4
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	How old is the gas? Is the air filter clean? Have the carbs been synced lately? If that's all OK, you may need to try again on the carb cleaning. Did you remove all the jets and clean the passages? The Pilot Jets have small cross-drilled holes that easily plug. At times, replacing the jets with new is the best/only solution - and not a bad idea in general. The other issue is excessive play in the cush drive. Here's the solution - https://faq.ninja250.org/wiki/How_to...the_cush_drive
	1 out of 1 members found this post helpful.

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April 30th, 2018, 08:40 AM	#2
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Does 1st take off better with choke ON? or OFF? Rear hub is missing the cush-drive rubbers.