Which plug is correct ?

[cyclops2]

My 1988 28 spl is in need of plugs. I get different heat ranges from asking NAPA stores & Evinrude lookup. Champion said there is a 3 heat range difference between the 2 companies.

Any for sure # to use ?

Thanks

[Joe Reeves]

Use Champion QL77JC4 plugs, gapped at: (Your choice as below)

.040 - Originally recommended when new (Hot spark)

.030 - Revised recommended in the late 1990's (Long life)