Honda GCV135 Problem Solving And Maintenance Manual page 16

Engine Model: Honda GCV135
We advise the engine should be drained of fuel before storage for more
than 30 days. One should only buy fuel in quantities that can be used
within a few weeks, and petrol should be bought from the garage and
transported/stored in approved plastic petrol containers.
NB: Where a fuel supply blockage has occurred, a service dealer
should be consulted to free the blockage.
Your local ServiceLink centre can be found at
Page 16 of 32
and
Honda GCV160
Turn fuel the valve to the OFF position
Remove the float bowl bolt (10mm spanner) and turn
fuel valve to the ON position to drain the fuel.
After draining, re-install the float bowl while holding it
in position, and tighten the float bowl bolt securely.
Honda Engines Selfhelp
www.servicelink.org.uk
Guide 2011, Issue 1.0