i had purchased an 1985 trx70 for my grandson 3 years ago . now i have picked up an 85 trx 125 . the 125 has been setting for 15 years or so , but i cleaned the carb and put in a new plug and battery it started up and ran fine , but smoked . the 70 after 3 years of pretty hard yard riding is started to smoke also . over the years i have been familar with plenty of 2 stroke motorcycles , but never a 4 stroke . i was wondering when i tear into these , is there anything that i should be aware of ? i figure i’ll have plenty of questions along the way , so i will thank all of you in advance ,thank you . Ed MIkeworth

i had purchased an 1985 trx70 for my grandson 3 years ago . now i have picked up an 85 trx 125 . the 125 has been setting for 15 years or so , but i cleaned the carb and put in a new plug and battery it started up and ran fine , but smoked . the 70 after 3 years of pretty hard yard riding is started to smoke also . over the years i have been familar with plenty of 2 stroke motorcycles , but never a 4 stroke . i was wondering when i tear into these , is there anything that i should be aware of ? i figure i’ll have plenty of questions along the way , so i will thank all of you in advance ,thank you . Ed MIkeworth