Question about Yamaha Motorcycles

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My 1979 yamaha 175 enduro starts, but goes backwards when put in gear. Is the final drive gear in backward, and if so, how do I turn it around? which one is it?

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  • Yamaha Master
  • 44,725 Answers

Hi, Dave it has nothing to do with the transmission your ignition timing is off a few degrees and allowing your engine to fire up and run "BACKWARDS" it's a 2 stroke what can I say.
for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
FLYWHEEL MAGNETO TIMING
Two stroke run backwards
http://www.yamahait.com.au/files/DT175_electrical.pdf
Yamaha DT100A 1974 Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-dt

Posted on Apr 22, 2017

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6ya6ya
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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: when put into drive the car won't drive

the problem is the forward clutch pack has failed in the trans or the hydraulic pressure that applies that clutch pack is leaking. u are going to need an overhaul

Posted on Jul 20, 2009

wilsodfarm
  • 986 Answers

SOURCE: FORWARD AND REVERSE GEAR SELECTION BACKWARD

Recheck your belts, does your engine have a pto

Posted on Jul 28, 2009

  • 1 Answer

SOURCE: My 81 yamaha enduro is smoking badly

Same happended to me with exactly the same motorcycle... I solved the provblem by replacing the crankshaft oil seal on the rightside of the crankcase. It solved the problem immediatly!

Posted on Aug 08, 2009

  • 37 Answers

SOURCE: 1971 yamaha 175 motorcycle electrical problem

ill do a list of things that can help or be the problem.

1) Pull the coil off and wire brush down all the bare metal. then do the same to the frame where it bolted on. Make sure there is a grounded wire that bolts back onto the coil if there was one, Replace the wire end for the ground peice.

2) Pull off the spark end cap and cut the wire down a few mm until you see new wire then screw it back on. (if its NGK)

3) follow the wire from the kill switch and make sure it isnt grounding out.

4) Hotwire - find the kill switch and unplug it. if this doesnt help unplug the ignition key wiring. on older bikes it will work for ignition but not lights for the key part. if this helps you need a new Ignition barrel / Kill switch.

5) check your wiring harness make sure it isnt grounding anywhere exept where its ment to.

6) make your your engine to CDI is plugged in and has no oxide in it

7) try and find somone with a running bike the same as yours and borrow there CDI, if this helps you need to buy a new CDI or check yours for wiring shorts.

hope this helps if not buzz me (skuly@Hotmail.com)

Posted on Feb 17, 2010

  • 24 Answers

SOURCE: my yamaha dt 175 enduro serial number is

You have the 175G Model from 1980. The engine number starts with 3J1-000101

Posted on Aug 21, 2010

Testimonial: "thanks for the info ,the bike says it was built in july of 1980 would that make it a 1981"

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I have a 1978 Yamaha dt 175 enduro motorcycle, got it to start and run but when you put it in gear to go it goes in reverse. what is rotation or why is this like it is?


DUDE! I totally just wrote this long ol answer to your problem ,then the computer didn't take it! Anyway, ok, Dude, just take the right side cover off, and check for damage to your clutch housing gear, the gear behind you clutch housing, and your final drive gear.....What I think happenned is that someone (while working on that bike) put your final drive gear on backwards, and it's still meshing with your clutch housing gear, but since the gear is backwards, it's pushing your bike bakwards......Not to mention though, if that is it, Man your bike aint feeling to happy inside, I'm thinkin' "man, if that bike is doing that, there's gotta be some damage somewhere".....But, I'm hoping that there isn't, so we'll pray to GOD that there isn't.....Ironically, you wont really hurt the bike too bad, AS LONG AS YOU DON'T PUT IT IN GEAR! But think of it this way, accidentally, you have one of the most unique bikes in the world.....Imagine how many people you could impress on the computer, if you could learn to ride that baby backwards dude! They would be like, "dude! how does he do that" ? how did some one put a reverse gear on a motorcycle like that"?? Man, talk about the possibilities, in circuses, or carnivals.....Anyway, if you don't want all that, I would just look at taking the nut off the final drive gear, then just flipping over your gear the other way......Please let me know what you find, I'll try to help you more if you need it....Oh yeah, and by the way, your magneto ( on the left side ) of the crankcase, and your final drive gear,( on the right side ) of your motor, is supposed to spin towards the front of your motor cycle.....IF, by any chance they are not, then you got somethin' screwy goin' on inside the transmission.....somethin's reversed there hombre'.....THANKS, GOD BLESS.....JASON!

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