Honda TRX FOURTRAX FOREMAN RUBICON 2019 Owner's Manual page 270

Quick Reference
Scheduled
Maintenance
Pre-ride
Inspection
Fuel/Capacity
Engine Oil/
Capacity
Maximum
Weight Capacity
Quick Reference
Initial: 100 miles (150 km)
Regular: every 600 miles (1,000 km)
Check the following items each time
before you ride (page 61): engine oil,
radiator coolant, fuel, tires, drivetrain
boots, guards, nuts & bolts, underbody &
exhaust system, air cleaner housing drain
tube, leaks, loose parts, cables, lights,
throttle, brakes, reverse assist lever,
switches, steering.
unleaded gasoline, pump octane number
86 or higher
3.88 US gal (14.7 ℓ)
reserve:
1.29 US gal (4.9 ℓ)
API Service Classification SG or higher
except oils labeled as energy conserving
or resource conserving on the circular API
service label, SAE 10W-30, JASO T 903
standard MA, Pro Honda GN4 4-stroke oil
or equivalent
after draining:
3.1 US qt (2.9 ℓ)
after draining & oil filter change:
3.2 US qt (3.0 ℓ)
573 lb (260 kg)
rider, all cargo and accessories