by bgsengine » Sun Jul 06, 2014 10:47 am
I believe the base model to that would be 243400 which is usually enough to get service manual and basic parts common to that base model..
But as others said - I would start with the least destructive and see if the numbers are hidden by paint OR by rust - if painted, use paint thinner or carb cleaner to see if you can scrub some paint off - if rusted, use a fine emery cloth or finishing sandpaper to lightly and gently sand off the rust (as KE mentioned vinegar helps) - and looking at the numbers from various angles can also bring out individual digits - kind of a fill in the blanks thing get as many numbers as you can and we can probably help fill in most, if not all, of the rest.
How poor are they who have not patience. What wound did ever heal, but by degrees? - Iago (Othello Act II, Scene 3)