My Homelite strimmer (model: UT20764A) has been running happily on the 25:1 fuel ratio mixed for my Victa Mustang. However, the handbook supplied with the strimmer (for models: UT20685A & UT20687A), states that 50:1 should be used. Should I switch to 50:1 or continue with 25:1? (This would mean only mixing one lot of fuel).
