Coils in 1981 850G

[Hoyt]

How do I know when I need to replace the coils? Will they just stop working or will they slowly get weaker? Will I notice a huge difference by replacing them? They are the originals. i just purchased a new gel battery to go with it also.

Does anybody have a part number for the coils that I need? I'm, having trouble finding that.

Thanks!

[Brendan W]

Coils can be less than good long before it gets noticed. Chances are they are not like new but are you having any problems? Mine are original and appear to run fine. If I was having problems my first targets would be battery,plugs,ht leads and the ignitor unit. I would suspect them if all the above were good and I was getting unexplained misfires that got much worse in the rain. Running the bike in the dark with the tank off is a good way to track down wayward sparks.

[Guest]

Here's a link to a great source:

http://www.z1enterprises.com/ShopByCategory.aspx?name=Coils+%26+Wires&description=Ignition+Coils+and+Plug+Wires&category=0102040304

My '79 has the originals, but I replaced the cracked plug wires.

Below is the best link you can get for info about your machine:

http://members.dslextreme.com/users/bikecliff/

[Redman]

Replacement coils are expensive.
Would not replace them unless have troubleshoot and defiantly determine are bad.
Test in manual is just an ohm check of primary and of the secondary.

One thing (or 4 things) that often get overlooked when having ignition problems is the sparkplug caps. They can fail over time more so than coils. And they are cheap ($4-5 each) compared to anything else in ignition system.
Oh, they do come off the wires, just twist and pull. And can check with ohm meter (should be about 5k ohms).

.

[Redman]

17 33410-45110 COIL, LGNITION NO.1 1 18 33420-45110 COIL, IGNITION NO.2 1




21 33510-45010 CAP, SPARK PLUG (L) 2 22 33510-43010 CAP, SPARK PLUG (S) 2
Those would be Suzuki part numbers.
But for the sprk plug cap you could use generic NKG XB05F and VB05F (2 each)


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