Thetford 40538 SmartTotes User Manual
Smarttote, Autostop, Level gauge kit
 
Before Beginning
4
Read	all	instructions	com-
pletely.
4
Wear	protective	gloves,	
glasses,	long	sleeves,	and	
nose/face	mask	to	avoid	con-
tact	with	human	waste.
4
For	hygienic	reasons,	rinse	
tank	and	hose	thoroughly.
SmartTote
®
AutoStop
TM
Level Gauge
Kit
Made in the USA
Thetford Corporation
Ann Arbor, MI 1-800-521-3032 www.thetford.com
F#
	40620
2/07
Part No.
40531
1. Pull old lanyard from tank
body.
2. Turn old Level Gauge clock-
wise	until	two	finger	tabs	line	
up	with	“O”s	on	tank	body.	Lift	
off	old	Level	Gauge.	Discard.
3. Line up and insert new Level
Gauge	into	tank.	Turn	counter-
clockwise	until	finger	tabs	line	
up	with	“V”s	on	tank.
4. Connect lanyard on tank.
Holding Tank Accessories
Before Beginning
4
Read	all	instructions	com-
pletely.
4
Wear	protective	gloves,	
glasses,	long	sleeves,	and	
nose/face	mask	to	avoid	con-
tact	with	human	waste.
4
For	hygienic	reasons,	rinse	
tank	and	hose	thoroughly.
SmartTote
®
AutoStop
TM
Level Gauge
Kit
Made in the USA
Thetford Corporation
Ann Arbor, MI 1-800-521-3032 www.thetford.com
F#
	40620
2/07
Part No.
40531
1. Pull old lanyard from tank
body.
2. Turn old Level Gauge clock-
wise	until	two	finger	tabs	line	
up	with	“O”s	on	tank	body.	Lift	
off	old	Level	Gauge.	Discard.
3. Line up and insert new Level
Gauge	into	tank.	Turn	counter-
clockwise	until	finger	tabs	line	
up	with	“V”s	on	tank.
4. Connect lanyard on tank.
Holding Tank Accessories