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June 2021© Kubota B2301/2601 ROPS Cab Installation Manual
35. Take the heater hoses and route towards the open ports where the bypass hose used to be
located.
36. Use the provided HS-6 hose clamp to secure the first hose to the top port, cut any excess
hose first. Route the other hose to the other open port. Cut any excess length, and connect to
the port with the provided HS-6 hose clamp.
37. Make sure all fitting connections are tight and the hoses are properly secured to the
machine. Re-fill the engine antifreeze. Start the engine and turn the cab fan on. Take the
radiator cap off of the engine and place a funnel into the radiator. Fill the funnel with
antifreeze. The engine will need to run for a few minutes and the thermostat open a few times
in order for all air to be purged from the heater system. The air at the louvers should be very
hot when that occurs. NOTE: ensure adequate fresh air ventilation in the work space you are
in, carbon monoxide from the engine exhaust is deadly.
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