Question about 1999 Suzuki GSX-R 750 X

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Hard to shift

Son changed oil added stp like liquid to oil.Now bike has shifting problems.

Posted by Anonymous on

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Posted on Jan 02, 2017

ollie reece
  • 1167 Answers

SOURCE: Very hard shifting and clunking into gear

hi mate try not to use fully synthetic oil use semi synthetic and if its clutch slipping you will tell because when you put it in 1st gear it will jump forward or move a little bit but if not then your clutch is perfect also check chain tension if to tight will cause clunking good luck buddy :)

Posted on Aug 08, 2009

EdNelson
  • 149 Answers

SOURCE: I just changed the oil

What type of oil did you use and how much did you use.

You should have used a 10w40 or 20w-50 weight oil with no additives (if it says "energy conserving" or something similar, don't use it) due to the bikes wet clutch.

You should have used 3.6 quarts if changing the oil filer at the same time as the oil, or 3.2 quarts if changing the oil only and leaving the filter in place.

I have a complete How To on changing your oil here:
http://www.ednelson.us/blog/?p=768

It sounds like your motor may need to be looked at by a dealer, it sounds like it may be seizing due to lack of oil. The 'check oil' warning sounds like insufficient oil level. Do not start it ride it until you have it checked by a service center!

Posted on Jan 03, 2011

  • 8909 Answers

SOURCE: I have a 2003 Suzuki

New forks will certainly help.

Posted on Jan 18, 2011

  • 3567 Answers

SOURCE: In shifting though gears, with bike running and

The bike has a slightly bent shift fork. The repair is a pretty major operation and I don't recommend the casual mechanic attempt it. Below is a diagram showing how the shift drum moves slider gears for different gear changes. Please rate my answer. Thanks. tombones49_128.gif

Posted on May 10, 2011

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2 Answers

Yamaha XJ600 -84. Have problem when shifting gears both up and down. the gear lever is very hard to move. Engine has run 31500 km and everything else works fine except this.


The problem is bent shift forks. They will soon get to where you can't shift at all. This is an expensive repair. Parts can be hard to come by on a bike as old as yours. The motor comes out of the bike then turned upside down for removal of the bottom case. The clutch, shift shaft, flywheel, electrics, gears and gear shafts gotta come out so you can get to the bad fork. There's much more but the idea is that you are better off having the shop do the repair unless you have experience, are extremely mechanically inclined, and have the tools. The bad news is that a shop is going to charge around $1500 for the repair. Some shop mechanics also repair bikes at home. If you find one, you can save $400 or so. Please rate my answer.

Apr 26, 2011 | 1990 Yamaha XJ 600

1 Answer

When i was parking my bike this morning I noticed it was extremely hard to shift into nuetrel and into the the other grears. This all happened after I stopped the bike and was parking it. Would this be the...


Many problems involving hard shifting in motorcycles can be attributed to using the wrong type of oil. Automobile oils use different additives . Motorcycle additives are designed to work with wet clutches and transmission gears not used in cars. You should use any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring. Do not use any oil that says Energy Conserving on the label . It will shorten the life of your wet clutch and transmission gears. If you use Synthetic oils, they will help your bike run cooler and shift easier. I use synthetic oil in my 1976 Goldwing . It will not go into neutral on a hot days after freeway driving and full synthetic oil solves the problem of sticky shifts. This may not be what is causing the problem in your cycle but it is worth a try. Both Kawasaki and Suzuki offer inexpensive full synthetic motorcycle oil by the Quart.

Nov 12, 2010 | 2002 Yamaha Road Star Warrior

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1987 Cavaclade shifts up fine hard to down shift, could it be linkage out of adjustment or could it be tumbler in engine.


This problem could be anything from adjustment on the shift rod to worn shift forks in the transmission. It is not easily diagnosed and takes time with the bike to figure it out. I would start with adjusting the shift rod and see if that helps. Another solution is if you havent change the oil in awhile you might try that as well, sometimes as oil breaksdown it will not lubricate as well causing the transmission to shift hard.

Nov 04, 2010 | 1986 Suzuki GV 1400 Cavalcade LXE

2 Answers

Finding neutral


This is usually down to clutch adjustment.If the bike shifts into neutral at stand still but doesn't when hot then your clutch cable needs adjusting so you have 1/8th of an inch freeplay at the lever. Also try running on a 20/50 oil as these bikes weren't designed to run on synthetic oils( clutch slip ) Also warm the bike up properly before a ride , don't tear off with the engine cold. Happy riding.

Sep 03, 2009 | 2003 Yamaha TT 600 R

1 Answer

Goes into neutral and then shifts hard into 1st on slowdown


It sounds like your input clutch seals are rolling. Is the check engine light on. It could also be the pressure control solenoid could be causing the problem aswell

Sep 02, 2009 | 1998 Buick Century

1 Answer

Very hard shifting and clunking into gear


hi mate try not to use fully synthetic oil use semi synthetic and if its clutch slipping you will tell because when you put it in 1st gear it will jump forward or move a little bit but if not then your clutch is perfect also check chain tension if to tight will cause clunking good luck buddy :)

Aug 08, 2009 | 2004 Suzuki GSX-R 600

1 Answer

I have a 2001 suzuki gsxr 600 shifting problems


One of two things is happening. One is the cost of a double oil change and filter. The other requires your banks loan officer.

Change gearbox oil and install a new oil filter. Dirt and grit in the oil is binding the gears and shift drum. Ride the bike for a couple of hours. Now drain the oil again and put in fresh oil. This will flush out the dirt and grit. Use 10w40 motor oil. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. If dirty oil is not the problem at least we eliminated the possibility for only the cost of a few quarts of oil.

Now let's talk about that loan officer. The shop is going to charge around $1000 plus to replace a bent shift fork. This is not a repair for the untrained. Sorry.

Jul 06, 2009 | Suzuki GSX-R 750 F Motorcycles

1 Answer

Trans hard to shift into neutral


One of two things is the problem, with one thing being a low cost to try and one thing being a high cost to repair. The low cost thing is the oil. I am assuming the oil hasn't been changed in a long time. Dirty and gritty oil can inhibit shifting. Change the gearbox oil and install a new oil filter. Use 10w40 motor oil and stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. Avoid any special additives in the oil and do not use synthetics. The filter is at the front of the bottom casing. Ride the bike for 50 miles. Now drain the oil again and put in fresh oil ( and preferably another new oil filter ). This will flush out the dirt and grit in the engine.

If that does not solve the problem then you have a bent shift fork. The repair is major surgery on the engine. The engine gets removed from the frame then the bottom casing is removed to gain access to the gears. Then the gears and shafts are removed to gain access to the shift drum and shift forks. This is not a job for the novice mechanic.

Now would be a good time to have the shop do a tune-up on the bike. They should check and set the valves. Install new spark plugs and air filter, set the ignition timing and check the CDI for proper operation. They should also clean, syncronize and balance the carbs. Sync and balance them at least. Cleaning can be expensive and my general rule is " if is ain't broke, don't fix it ". By he way, don't try the sync and balance yourself. You will likely wind up taking it back to the dealer asking why it won't start and run good. Oh, and why is the engine backfiring?.

I hope I have not been too long in my solution and also that a bent shift fork is not the problem. Best wishes.

Please top rate this solution. Thanks!

May 30, 2009 | 1989 Yamaha YX 600 Radian

1 Answer

Clutch not engageing


Start by changing the gearbox oil and the filter. Ride for 50 miles or so then change the oil again but w/o a new filter this time. Doing this will flush the dirt and grit from the gearbox. Use 10 w40 Pennzoil, Mobil, Shell or any other major brand.

The clutch is not fully dis-engaging. That is what is causing the shifting problems. Hopefully a shift fork has not been bent in your efforts to shift gears. The cost of 6 or 7 quarts of oil and an oil filter is nothing next to the cost for replacing bent shift forks.

Please rate this solution. Thanks Coty!

Apr 17, 2009 | 1987 Honda VT 1100 C Shadow

1 Answer

Rough, chugging when driving and conking out


Could also be a faulty mass air flow meter, or throttle position sensor. It's hard to tell, you need to take it to a shop to be properly diagnosed.

Sep 05, 2008 | 1995 Nissan Altima

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