Question about 1978 Yamaha XS 650 E

1 Answer

Exploded diagram of 1978 xs650 top end absent from my cd manual

How does the rear cam chain tensioner blade fix at the top?a small metal cage has posible been miss fitted

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,512 Answers

G'day mate. It doesnt fix at the top, it is hinged from the bottom and need to be able to float free correct adjusted by the cam chain tensioner against the cam chain to to work correctly. Is there a reason you are worried about this? regards robotek

Posted on May 08, 2010

  • Graeme Ross
    Graeme Ross May 15, 2010

    Thought this may be helpful to you also. You can get(for free) a download of the service manual from here to help you see how it works. Hard to get the cam chain and tensioner wrong really. If you have the engine running,is the chain noisy? Do you have any end float in the cam shaft? the camshaft bearings need to be tight up against the first lobe of the cam, both sides, and the cam centralised.

    You can generally see where the bearings have been sitting in the past and use as an indicator to assist with lining things up. Happy to talk to you more about it.




1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2009 Yamaha yZFR1 replace cam chain tensioner

Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
HOW TO 09 14 R1 Manual Cam Chain Tensioner
2009 Yamaha R1 Cam Chain Tensioner
Yamaha 2009 YZF R1 Service Manual
OEM parts for Yamaha
Yamaha 2009 YZF R1Z Owner Manual

May 22, 2017 | 2009 Yamaha yZFR1

1 Answer

How do I remove the cage on this fan to get to the blades

look carefully at the edge of the cage, there are several different mechanisms for holding the cage together. one could be a small screw on the very bottom of the cage this can be loosened and then the front of the cage can be pried off the rear of the cage taking care not to damage any of the clips. another mechanism is hinged clips which can be swung away from the cage, sometimes requiring the use of a needle nose pliers if very tight. Some of the old Patton fans have metal prongs and these can be gently pushed in while removing the front of the cage. Basically you look carefully and figure it out. Refer to the manual which one can usually search for online.

Oct 09, 2015 | Dryers

1 Answer

Cam chain adjustment

cam chain tension will not cause your problem. A miss at revs is electrical (coil -points-ht leads-plugs etc) and possible air/ fuel ratio problem --leaning out at revs from jet size setting

Jun 23, 2013 | Office Equipment & Supplies

1 Answer

Timing chain noise

Yes, that would sound about rite the xl125 r along with all the single hondas are pron to chain noise, easy fix, remove alternator l/ h cover, also timeing cover on cylinder head, mark plate and case with screwdriver for exact replacment, undo 10 mm bolt in end of camshaft and remove the atu unit take care not to loose the locating pin from the camshaft
Remove the pin if loose, undo the 2cover bolts and remove the cam cover, locate the timeing mark on the cam wheel and turn the engine until the mark on the wheel aligns with the mark on the case at about 12 oclock, then check the position of the lower pully and mark this, undo the top wheel bolts securing it to the camshaft, gently pull the wheel of the cam slightly and then hook the chain off the wheel, the cam wheel will now pass through the case opening,the cam chain will now come off the lower wheel, and can be pulled up and out over the end of the camshaft, and replacment would be in reverse order, checking alignment of all previously noted marks and security of all fixings before rotating the engine with a spanner and check it completes a full 360 degres before atempting to use the kickstart, the tensioner is addjusted by removing the top nut from the tensioner located on top of the crankcase lh side at the rear of the cylinder, then undo the 14 mm tensioner bolt, you could try first off screwing a 4mm screw into the tensioner, where the 10 mm bolt is removed, undoing the 14mm and pulling up on the screw with a pliers while tightening the 14mm locking device, as the tensioner is automatic this would be a manual addjustment and may remove the exsess slack

Feb 27, 2011 | 1985 Honda XL 125 R

2 Answers

My chain snapped and I fixed that. But exactly how is the chain threaded through the Shimano rear derailleur? What is the correct path over and under the 2 jockey wheels? I cannot find a diagram that shows...

It will entail taking the chain apart again (known as "breaking" the chain).
The chain feeds UNDER the lower cog on the derailleur, BETWEEN the 2 cogs, and OVER the top one... then BEHIND the gear cluster and back OVER it. Run the other end AROUND the front chainwheels, through the front derailleur and re-connect. You may find it helpful to lay the bike on its side (sprockets up) and have someone hold rear derailleur to keep tension off the chain.e86da85.jpg
Good luck to you.

Oct 27, 2010 | Shimano 24 Speed Road Racing Bike Bicycle...

1 Answer

Campagnolo Record 10 sp. short cage rear drlr.+ 13-26 cassette

You don't say if this happens in the BIG ring, small ring or both. If it's just the big ring I'd suspect there isn't enough chain length.

Cross chaining is unnecessary and bad for your drivetrain. I never go more than one cog past the center of my cassette opposite the chainring I use.

May 02, 2010 | Campagnolo Record 10 Rear Derailleur

1 Answer

I have shimano rd6500 rear derailleurs. when chain is on small chain-ring and smaller rear sprockets the derailleur cage is rubbing against the chain.How do i tension chain to hold cage away from chain,...

If you learn to shift correctly this won't happen..

Google bicycle shifting technique, for example:

You should NEVER run cross-chained (big-big or small-small). The drive train performs best when the chainline is as close to straight as possible. Excess sideways stress on the chain will wear it out prematurely and increase its normal efficiency.

To demonstrate this for yourself, put the bike in the same combination of gears you're having a problem with. Get behind the bike and look staright along the top of the chain. As you can see the line of the chain is a mild zig-zag where it is parallel to the bike at each gear but needs to angle across the drivetrain in between. On some bikes the chain might even come in contact with the next larger chainring when used this way.

If you can shift to the big-big combination without snapping the rear derailleur off, you're lucky. The big-big combo uses up all available chain length and the rear derailleur will be pulled toward the front of the bike, sometimes so far that it is in danger of being snapped off.


As you can see, the rear derailleur is not long enough to **** up all the slack this gear combination creates. There are other combinations that would yield the equivalent gear ratio without either stressing the drivetrain or dropping the chain.

The basics of shifting are these:
1) The big ring and right side of the cassette in back are for speed.
2) The small ring and the left side of the cassette are for high torque, lower speed

Feb 24, 2010 | Shimano 105 Triple Braze On Front...

1 Answer

My shimno sora front derailler shifts perfectly to the small and large chain set cogs, but on the middle, the chain rubs along the cage.

Set the rear derailleur to the lowest gear (big cog) and the front to the lowest gear (small chain ring). Disconnect the derailleur cable. Screw in the adjuster for the cable tension all the way (this adjuster is on the shifter of a mountain bike or the down tube of a road bike). Pedal to make sure the chain is not rubbing on the derailleur cage. If it is, adjust the "L" setting on the derailleur until the chain moves by without touching the cage. Now pull taut and reattch the cable and shift the front to the big ring while pedaling. If it does not shift up well or completely, hold the shifter past its normal shift and adjust the "H" screw so that the derailleur allows the shift. Shift into the highest cassette gear and keep pedaling. The chain should not be touching the front derailleur's cage when you pedal. Adjust with the barrel adjuster until the chain moves freely without touching the derailleur cage.

i hope this helps

Oct 30, 2009 | Cycling

3 Answers

Wont change gears 12or3

There should be one or two limiting screws for the front derailleur that you can use to adjust how far out/in the derailleur moves to shift the chain over. You can ask a friend to lift the back end of the bike off the ground while you do the adjusting of these screws and then try shifting the gear while moving the peddles with your other hand.

Aug 21, 2009 | Huffy Womens Mountain Bike - Passion...

2 Answers

1993 YZ250 Timing

Judging by your previous questions,I think this is the info you need.
Setting cam timing with stock cams is relatively easy using the punch mark on the cam gears For stock timing, the punch marks at 9 O'clock on the exhaust cam and at 3 O'clock on the intake cam should align with the top of the head. If stock timing is altered the exhaust cam punch mark will either be one tooth above or one tooth below the top of the head.
  1. Take out tensioner.
  2. Remove both plugs from shifter side of crankcase, the center plug to turn, the 11:00 plug to locate the 'I' (not the H) in.
  3. Use a ratchet on end of crankshaft (through center plug) and zip tie ratchet to footpeg with the I lined up in the timing plug hole.
  4. With the intake cam (rear one) pointing straight back, align the punch mark on the backside of the intake cam sprocket with the top of the head. Since the slack in the timing chain is in the back, if it doesn't align exactly right at the top of the head, err slightly high. Zip tie chain to intake sprocket.
  1. Remove exhaust cam, count 12 links (where sprocket teeth will go) from the punch mark on the top of the intake cam and mark that position on the chain with something noticeable (use a Sharpie). Hold the exhaust cam close the to intake cam with the exhaust cams pointing horizontally to the front of the bike. With the exhaust cam in this position, there will be a punch mark at the top. Put the tooth above this punch mark in the chain link you marked that was 12 or 13 over. Zip-tie the chain to the exhaust cam.
  2. Reseat exhaust cam. The punch mark on the left side of the exhaust sprocket will align with the top of the head. It will be one link high. Go back and check that the I is still centered in the timing plug hole
    1. the intake cams point back
    2. the exhaust cams point frontward
    3. the rear punch mark on the intake is aligned or slight high with the top of the head
    4. the front punch mark of the exhaust sprocket is aligned with the top of the head
  3. Bolt and torque exhaust cam, torque intake if you've had it off.
  4. Install chain tensioner (wind it up, hold the screwdriver with two hands, use the third hand to put hold tensioner in place, and fourth hand to bolt it up, then release screwdriver and put end bolt in it.
  5. Remove zip ties on intake sprocket, exhaust sprocket, and ratchet holding TDC. Remove ratchet and replace both plugs.
  6. Put on valve cover and two hoses, reinstall tank and seat and go riding.

Please rate this a Fixya.

Feb 01, 2009 | Yamaha YZ 250 Motorcycles

Not finding what you are looking for?
1978 Yamaha XS 650 E Logo

332 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers


Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides