How can i tell my 1974 kawasaki g5 has a spark aresstor?

[sm7482]

it has no markings on the exhuast anywhere, unlike my honda. so how can i tell it has a spark arrestor?

heres a diagram and what each one is. is the heat insulator the same as a spark arrestor?


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SKU: 18001-068
MUFFLER ASSY Includes items 1 - 6 Includes items 1 - 6 1 $117.90

SKU: 18033-054
BAFFLE TUBE Includes items 2 - 5 Includes items 2 - 5 1
3 SKU: 18048-015
TAIL PIECE 1

4 SKU: 463H0600
WASHER LOCK 6MM

5 SKU: 112G0612
BOLT-UPSET,6X12 3

6 SKU: 92022-183
WASHER-PLAIN 2

7 SKU: 18065-007
INSULATOR 3

8 SKU: 18065-009
INSULATOR-HEAT 2

9 SKU: 18057-047
COVER,MUFFLER 1

10 SKU: 463H0600
WASHER LOCK 6MM 2

11 SKU: 220E0612
SCREW PAN HEAD 6X12 2

thank you

 

[1A]

If you look into part #2 from the end that has holes, you should see a cone shaped piece (generally referred to as "the bullet") suspended within the tube with diagonal fins. It will probably be down where the tube gets wider. That is the spark arrestor. The idea is to sling the hot pieces of carbon against the cooler side wall before they exit the tail pipe. It may even be in part #3.

Even in 1974, spark arrestor mufflers were standard on Japanese bikes. I was working at a Suzuki shop in north Texas and all those models except the MX (TMs) had them. Each muffler had the "Forest Service Approved" info stamped into the body of the muffler (part #1 in this case). Between the spark arrestors and the air box intake horns most models would hardly run. As a result, many were "modified" before delivery.

 

[rmc_olderthandirt]

is the heat insulator the same as a spark arrestor?

No.

If your intention is to ride the bike in an area that requires a spark arrestor then it will most likely need to be a US Forest Service approved version. Such a spark arrestor will say (usually stamped into the metal) US FOREST SERVICE APPROVED SPARK ARRESTOR on it.

I would expect that it would be rather difficult to find such a beast to replace your stock exhaust system. What you can get, however, are small add on devices that slip onto the back of your exhaust. You can clamp one on when you want to ride in the forest and then take it off when you are riding in a place where you can get away without one.

Note that I said "get away with". Most public places in California require a spark arrestor, even in the desert! I have never seen it enforced in the desert, however.

Rod

 

[2strokerfun]

Now, "I've been told" they generally check for spark arrestors by sticking pole into rear of exhaust. If it stops, you're OK and they assume you have spark arrestor. Of course, just because I've been told this, doesn't make it true. No one has ever checked mine, but in Oklahoma, I doubt they ever will.